to have no other option but to...; to have to; to be forced to

I had to cancel that order because we didn't have enough money to pay for it.

He couldn't find the restroom, so he had to ask the shopkeeper for directions.

The car broke down, so they had to walk.

My friends were so boozed up that I had to drive them home.

The knife was so blunt that I could not cut the meat with it and I resorted to my pocket knife.